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目的:研究三维透明化VR重建在内耳畸形中的表现,为先天性内耳疾病提供准确的影像诊断和临床治疗信息。方法:回顾32耳内耳畸形的64排HRCT容积数据,行三维透明化重建处理,按内耳畸形分类总结三维透明化重建方法及影像表现。结果:32耳的三维透明化VR重建图像结合透明化MPR重组图像均能很好揭示内耳畸形病变部位及程度,其中VR图像可以直观、立体地显示畸形的空间形态结构,透明化MPR重组图像可很好显示病变细节。本组先天内耳发育畸形有以下几种:耳蜗未发育(2耳);共同腔畸形(4耳);不完全分隔Ⅰ型(2耳,两例患者对侧耳均为共同腔畸形);不完全分隔Ⅱ型(即Mondini型()16耳,多合并前庭、半规管及前庭导水管畸形);单纯前庭-半规管畸形2耳;单纯前庭导水管扩大(6耳)。结论:三维透明化个性重建能准确评价内耳先天性疾病的类型和程度,为临床治疗提供重要的参考依据。
Objective: To study the performance of three-dimensional clear VR reconstruction in the deformity of the inner ear and to provide accurate diagnosis and clinical treatment of congenital inner ear disease. Methods: The 64-row HRCT volume data of 32 ears with inner ear deformity were retrospectively analyzed. Three-dimensional transparent reconstruction was performed. The three-dimensional transparent reconstruction method and imaging findings were summarized according to the classification of inner ear deformity. Results: The three-dimensional transparent VR reconstruction images of 32 ears combined with the transparent MPR images could well reveal the location and extent of deformities in the inner ear. The VR images can intuitively and stereoscopically display the morphological structure of deformities. The transparent MPR images can be reconstructed Good to show the details of the lesion. This group of congenital auricle development deformities are the following: cochlear development (2 ears); common cavity deformity (4 ears); incomplete separation of type I (2 ears, the two cases of patients with lateral ear are common cavity deformity); incomplete Isolated type II (Mondini type () 16 ears, multiple combined vestibular, semicircular canal and vestibular aqueduct); simple vestibular - semicircular canal deformity 2 ears; simple vestibular aqueduct enlargement (6 ears). Conclusion: 3D transparent reconstruction can accurately evaluate the type and degree of congenital diseases in the inner ear, and provide an important reference for clinical treatment.